Improvement in last-channeling machines



DARozm, Last-Channeling Machine.

No. 209,113. Patented oct. 22,1873.

W-Lrle sii-TES. DVI-", om' M yver 24172-7 m5 N-PETERS.PHOTO-LITHOGRAPHER. HlNGTON D C UNITED STATES PATENT OEEIoE.

LEVI DAROZIR, OF NATIOK, MASSACHUSETTS.

IMPROVEMENT IN LAST-CHANNELING MACHINES.

Specification forming part of Letters Patent No. 209,113, dated October22, 1878 5 application filed November 20, 1877.

To all whom it may concern Be it known that I, LEVI DARozIR, of Natick,in the county of Middlesex and State of Massachusetts, have invented anImproved Shoe-LastCl1anneling Machine, of which the following is aspecification:

vThis invention relates to a machine designed to channel and otherwiseprepare the bottoms of old and worn-out or new lasts for the receptionof filling-pieces of leather or other substance. into which the pegs orfastenings uniting' the soles to the uppers pass when driven through theinner sole in the manufacture of boots and shoes.

Wooden lasts are rapidly worn out, and soon become useless by the actionof the awl and pegs and have to be thrown away. This loss of lasts is avery serious item of expense in the manufacture of boots and shoes.

By the machine herein described, old and worn-out lasts may be channeledor cut to receive a leather or equivalent lling, as described in anotherapplication, filed concurrently with this, for a patent for a shoe-last,and to which reference may be had, and such lasts so prepared may bereused and reprepared from time to time, thereby resulting in greatsaving in cost of lasts.

This invention consists in a last-channeling machine composed of arotating mandrel or shaft, a toothed, rotating, groovin g, or millingtool adapted to cut channels in the edges of the last-bottom and therounded recesses at the heel of the last, all substantially ashereinafter described.

The invention also consists in a lastchan neling machine having a shaftand toothed channelin g or grooving cutters and an abrad- 1ngcylinder todress or abrade the bottom of the last, substantially as set forth. iFigure l represents my improved machine 1n perspective; Fig. 2, an endview; Fig. 3, a section of the heel-cutters, and Fig. 4 a view of a lastcut by the machine.

The letter a represents a bed-plate, having suitable standards b b, thatsustain a rotating shaft or mandrel, c, provided with a belt-pulley, d,by which the shaft is revolved at the required speed. This shaft isprovided at one end with a toothed channel-cutting tool, e, of

the width of the desired channel to be out, such channel being shown atj', Fig. 4.

At the opposite end of the shaft is placed a cutter, h, (see section,Fig. 3,) preferably made in several pieces, so as to out the heel o fthe last rounding, as seen at z', Fig. 4. The toothed surface of thiscutter or tool h is made as wide as the distance between the end of theheel ofthe last and the shoulder 2, and the cutter may then be shaped togive to the last the desired curve from the shoulder 2 to the heel. Atthe end of the shaft is placed a boring-tool, j, by which to bore outthe holes 3 in the last-bottom to receive center pieces orplugs ofleather or wood.

The shaft is provided at l with a cylinder covered with sand-paper orequivalent mate-Y rial, to dress or abrade the bottom of the last afterthe filling-pieces of leather are applied. The tools working in the hardwood of the last make ne dust.

To prevent this interfering with the operator and to direct it in anydesired direction, I place on the shaft a fan-wheel of any ordinaryconstruction, it working in a case, m. This fanwheel creates a currentor blast of air, which may be directed through a iiexible or other tube(attached to the fan-,spout h) to the cutter where the operator isworking, when the blast of air will blow the dust away.

The machine may be provided with suitable rests, as shown at n, and withedge-gages, by which to assist in holding the shoe-last in po sition andin guiding it in the proper path to the action of the cutters.

I do not broadly claim a rotating shaft and a toothed wheel to cut woodor metal 5 nor do I broadly claim a rotating cylinder covered withsand-paper; but Iam not aware that a machine was ever before made to cutchannels in wooden lasts and cut the heels and renovate old or preparenew lasts, substantially as described.

l. Ina machine for channeling las ts, the toolcarrying shaft c, incombination with the toothed cutting-tool h, constructed, as shown, tocut the recess at the heel rounding from the shoulder 2 to the end ofthe heel, substantially as described.

2. A machine for channeling;` lasts having an operating-shaft, c, a.cutter, c, to cut channels in the last, and a cutter, h, constructed, asshown, to cut the recess at the heel rounding` from the part 2rearwardly, substantially as described.

3. A machine for channeling lasts having the shaft c, sole-channelingtool c, heel-roun ding Glitter h, tcolj,.for boring holesin the soles,and the cylinder l, for dressing the last by grinding or abrading,substantially its de' scribed.

In testimony whereof I have signed my name to this specification in thepresence 0f two subscribng witnesses.

LEVI DAROZIR.

Witnesses:

G. W. GREGORY. S. B. RIDDER.

